pkg/lwip: changes for ESP8266 esp_wifi
pkg/lwip: changes for ESP8266 esp_wifi

x3ro/RIOT,OTAkeys/RIOT,mtausig/RIOT,ant9000/RIOT,basilfx/RIOT,authmillenon/RIOT,yogo1212/RIOT,kaspar030/RIOT,smlng/RIOT,kYc0o/RIOT,authmillenon/RIOT,OlegHahm/RIOT,aeneby/RIOT,mtausig/RIOT,ant9000/RIOT,OlegHahm/RIOT,mtausig/RIOT,kYc0o/RIOT,kaspar030/RIOT,OTAkeys/RIOT,authmillenon/RIOT,miri64/RIOT,toonst/RIOT,yogo1212/RIOT,mtausig/RIOT,kaspar030/RIOT,kYc0o/RIOT,miri64/RIOT,RIOT-OS/RIOT,miri64/RIOT,OlegHahm/RIOT,josephnoir/RIOT,authmillenon/RIOT,josephnoir/RIOT,authmillenon/RIOT,smlng/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,mtausig/RIOT,jasonatran/RIOT,smlng/RIOT,jasonatran/RIOT,toonst/RIOT,x3ro/RIOT,x3ro/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,yogo1212/RIOT,basilfx/RIOT,OTAkeys/RIOT,x3ro/RIOT,aeneby/RIOT,kYc0o/RIOT,miri64/RIOT,ant9000/RIOT,smlng/RIOT,kaspar030/RIOT,aeneby/RIOT,smlng/RIOT,toonst/RIOT,yogo1212/RIOT,basilfx/RIOT,basilfx/RIOT,OlegHahm/RIOT,toonst/RIOT,aeneby/RIOT,aeneby/RIOT,josephnoir/RIOT,jasonatran/RIOT,kYc0o/RIOT,basilfx/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,josephnoir/RIOT,x3ro/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,josephnoir/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,toonst/RIOT,ant9000/RIOT,miri64/RIOT,ant9000/RIOT,jasonatran/RIOT,jasonatran/RIOT